Sprinkle both sides of chicken with 3 teaspoons of the Garlic & Onion Medley Seasoning. Grill over medium heat 5 to 7 minutes per side or until chicken is cooked through. Cut into bite-size cubes. Mix cheeses, oregano and remaining 1 teaspoon Seasoning in small bowl.

Stretch or roll dough on floured baking sheet to a 12- to 14-inch round, about 1/4-inch thick. Brush top of dough with oil. Place oiled-side down on the grill. Close lid. Grill over medium heat 1 to 2 minutes or until grill marks appear on the bottom of the crust. Carefully flip crust over using tongs or spatula.